Method for the combustion of a fuel-oxidizer mixture

1. A method for the combustion of a fuel-oxidizer mixture in a combustion chamber of a turbogroup

in particular of a power plant,

in which a total oxidizer flow is or has been divided into a main oxidizer flow and a secondary oxidizer flow

in which the main oxidizer flow is lean mixed

with a main fuel flow in a premix burner,

and this main fuel-oxidizer mixture is fully oxidized in the combustion chamber,

in which the secondary oxidizer flow is or has been divided into a pilot oxidizer flow

and a heat-exchanging oxidizer flow,

in which the pilot oxidizer flow is rich mixed with a pilot fuel flow, and the mixture is partially oxidized in a catalyst with hydrogen being formed,

in which the partially oxidized pilot fuel oxidizer mixture and the heat-exchanging oxidizer flow, downstream of the catalyst, are together introduced into at least one zone which is suitable for stabilizing the

combustion of the main fuel-oxidizer mixture.

2. The method as claimed in claim 1 , characterized in that the heat-exchanging oxidizer flow and the partially oxidized pilot fuel-oxidizer mixture are

lean or slightly lean mixed downstream of the catalyst.

3. The method as claimed in claim 1 , characterized in that the heat-exchanging oxidizer flow

is used to preheat the pilot fuel-oxidizer mixture and/or to cool the catalyst.

4. The method as claimed in claim 1 ,

characterized

in that the catalyst has a plurality of channels through which medium can flow in parallel and of which some are catalytically active and the others are catalytically inactive,

in that the pilot fuel-oxidizer mixture is passed through the catalytically active channels,

in that the heat-exchanging oxidizer flow is passed through the catalytically inactive channels.

5. The method as claimed in claim 4 , characterized in that the catalytically active channels and the catalytically inactive channels are coupled to one another in such a manner as to exchange heat.